The kernel in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows attackers to obtain sensitive memory-layout information or cause a denial of service (out-of-bounds read) via a crafted app, a different vulnerability than CVE-2016-4773 and CVE-2016-4776.
CVE-2016-4774
HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence
Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.1; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.1Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.1
- EG Score
- 7.1(medium)
- EG Risk
- 37(Track)EG Risk 37/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation1% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 61%
- KEV
- Not listed
Published
September 25, 2016
Last Modified
June 17, 2026
References (20)
- product-security@applehttp://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- product-security@applehttp://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
- product-security@applehttp://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html
- product-security@applehttp://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html
- product-security@applehttp://www.securityfocus.com/bid/93054
- product-security@applehttp://www.securitytracker.com/id/1036858
- product-security@applehttps://support.apple.com/HT207141
- product-security@applehttps://support.apple.com/HT207142
- product-security@applehttps://support.apple.com/HT207143
- product-security@applehttps://support.apple.com/HT207170
- af854a3a-2127-422b-91ae-364da2661108http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/93054
Frequently asked(5)
What is CVE-2016-4774?
CVE-2016-4774 is a high vulnerability published on September 25, 2016. The kernel in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows attackers to obtain sensitive memory-layout information or cause a denial of service (out-of-bounds read) via a crafted app, a different vulnerability than CVE-2016-4773 and CVE-2016-4776.
When was CVE-2016-4774 disclosed?
CVE-2016-4774 was first published in the National Vulnerability Database on September 25, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-4774 actively exploited?
CVE-2016-4774 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 38.8% of all scored CVEs.
What is the CVSS score of CVE-2016-4774?
CVE-2016-4774 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2016-4774?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-4774, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2016-4774
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